Coating machine



J. w. cosGRovE 1,931,528

COATING MACHINE Oct. 24, 1933.

Filed June 14, 1929 2 Sheets-Sheet l Figtl.

' Ill mil ' H-IU J. W. COSGROVE COATING MACHINE Oct. 24, 1933.

Filed June 14, 1929 2 Sheets-Sheet 2 Patented Oct. 24, 1933 uwrrsoSTATES Fries PAT NT COATING MACHINE ration of New Jersey ApplicationJune 14, 1929. Serial No. 371,000

6 Claims.

This invention relates to coating machines and is herein illustrated asembodied in a machine for applying adhesive coatings, such as cement toshoe parts.

Manufacturers of rubber soled shoes of the tennis or sneaker type and ofcloth gaiters or overshcessecure the various shoe parts to one anotherby applying marginal stripes of cementitious materialalong one or bothfaces of a piece of work. According to the wishes of the manufacturerand because of the varying designs of the different shoe parts, themarginal stripes vary in width.

An object of the invention is to provide an improved coating machinewhich will be easier to operate and better adapted for the applicationof stripes of cement of different widths to shoe parts such, forexample, as those above referred to.

It has been customary to supply coating machines of the general typeabove-mentioned with a variety of rolls having different widths so thatthe operatormight select a roll which would apply cement only to thepart of the work which should be coated Without Wasting cement byapplying it to a greater width than was needed. Although such anarrangement is economical of cement and may operate perfectly, it issomewhat expensive because of the necessity for .a considerable numberof parts and is inconvenient for the operator because of the need forchanging rollsto meet the demands of various groups of work. Moreover,in the case of an applying roll which is supplied with cement from an underlying receptacle, part-of the cement may be used from part of thewidth of the roll and the unused cement willbe returned directly to thereceptacle without difficulty. 1 On the other'hand, when it is desiredto utilize the cement from only a portion of the width of an upper rollfed by means of a superposed receptacle, there danger that the unusedportion of the cement will drip from the roll before it is carried backup into the receptacle if work ispresented to onlyia portion of itsWidth. To meet this problem an important feature of the inventionresides in an improved arrangement whereby the machine may be providedwith a roll or rolls of the maximum width desired, and the operatorenabled successfully to utilize only such a portion of the width of therolls as is needed for the particular work at hand. In the'illustrated'embodiment, this result is accomplished with respect to thelowerapplying roll of the double machineby providing an adjustable work supporting table having an extended guiding edge, said table beingadjustableacross the width of the roll so that the Work may be presentedto any desired portion thereof. As herein illustrated and in accordancewith an important fea- 50 ture of the invention, the upper roll of adouble coating machine is provided with a novel construction embodying ascraper for removing cement from a portion of the width of the peripheryof the roll so that cement is carried out of the receptacle by only somuch of the width as is to be utilized in coating the work.

This and other features of the invention are described in the followingspecification, taken in connection with the accompanying drawings, inwhich Fig. 1 is a side elevation of the machine;

Fig. 2 is an end elevation of the operative parts of the machine showinghow cement may be drained from the upper to'the lower re- '75 ceptacle',

Fig. 3 is a fragmentary View showing the applying rolls, with parts ofthe receptacle broken away and in section;

Fig. 4v is a vertical section on the lines IV-IV 0 of Fig. 3 throughvthe scraper and the gage associated with the lower roll;

Fig. 5 is a fragmentary perspective View of the applying rolls and theassociated parts; and

Fig. 6 is a view of a piece of work which has 5 been coated. x

The invention as herein illustrated is embodied in a machine ofthe typeshown in Letters Patent of the United States No. 1,380,360 granted June7, 1921 upon the application of John W. Cosgrove, to which reference maybe had for the description of parts, such as the driving mechanism, notherein fully shown and described. In common with the machine shown inthat patent, the one herein illustrated is provided with a '95 pedestalframe 10 supporting a large receptacle 12 for supplying coating materialto the upper applying roll 14. A driven agitator 13 is provided in thereceptacle 12. This roll 14 is journalled on a shaft 16 which is drivenby a gear connection from a drive shaft .18, and the machine is providedWith a movable support 20 in the form of an arm pivoted at 22 and raisedby mechanism including a' treadle connection .24. In the patentedmachine this movable support 20 carries a driven feed roll as themachine is arranged to coat only one face of the work, "but in themachine herein illustrated, provision is made for coating both faces anda lower applying roll 30 is employed which is secured to ashaft 32journalled in the movable supporting arm 20, and likewise driven bysuitable connections with the drive shaft 18.

Leakage of cement around the lateral faces of the upper roll isprevented as in the patented machine by mounting said roll in a closefitting removable casing 34 having a supporting stud 36, and cement issupplied to or shut off from the upper roll by means of a control valve38. In order that a portion only or the width of the periphery of theupper roll may be used for coat ing a marginal portion of a piece ofwork narrower than the width of the roll, the machine is provided with anovel scraper to slidably mounted in the casing 34: for movement in adirection parallel to the axis of the roll 14, and the position of thescraper is determined by an adjusting nut 42 engaging a forked end ofthe scraper and threaded on a fixed screw. The scraper do has arectangular cross section and its lower corner adjacent to the peripheryof the roll 14: is brought into such close relation to said roll asshown in Fig. 3 that it acts as a scraper to remove practically all thecement supplied to one portion. of the width of the roll. This scraperis cut away as shown at 44 in Fig. 5 to leave a narrow opening adjacentto the part of the roll by which a coating is to be applied; at the sametime the cut-away portion approaches suihciently closely to theperiphery oi the roll 14 so that it regulates the quantity of cementtaken out thereby. This scraper arrangement allows the application of astripe of cement separated from the edge of the work, if desired.

Cement is supplied to the lower roll 30 by means of a small receptaclewhich is more or less cup-shaped and is attached by screws 52 to aflange 53 provided with a flat end surface upon the casting constitutingthe movable support 20. This receptacle is only large enough toaccommodate a roll as wide as ever will be needed with the machine andcommunicates through a passage 54 (Fig. 2) formed in the casting with alaterally extending trough 56 having a terminal flange 5'7 which issecured to a flange 53 integral with the casting 20. This trough 56terminatesin a rounded slightly enlarged receiving cup 60 which has-acover 62 andwhich provided with a drainage valve 64. A removable cover66 is provided for the trough 56 to give access to it when it'isnecessary to clean out cement which may have become hardened throughimproper use of the machine.

Even with the storage space provided by the laterally extending trough56, the quantity of cement available for the lower receptacle is verylimited. Accordingly, provision is made for draining cement directlyfrom the upper receptacle 12 into the lower receptacle 50. To this end alaterally extending spout '70 is mounted on the'side of the upperreceptacle 12 where it is out of the way of the operator and this spoutextends to a point directly .above the receiving cup 60 carried on themovable arm 20.01? the machine. A valve 72, which like the drainage fvalve 64 is of the molasses cutter type, is provided to close the spout70 until such time as it is desired to refill the lower receptacle 50and the associated trough 56, whereupon it'is only necessary for theoperator to remove the cover 62 and to open the valve '72 so as to allowthe coating material to flow directly from the larger upper receptacleto the small lower receptacle.

The arrangement just described is also advaninto the upper receptacle.

tageous in those cases in which, through inadvertence or carelessness,the machine is allowed to operate for any substantial period of timewithout the introduction of pieces of work and.

with the coating rolls 14 and 3% closely adjacent to one another. Underthose circumstances, it has been found that the upper roll tends to pickup cement from the lower roll as suggested in Fig. 3 of the drawings andto carry it back This action if allowed to continue has been known tocause the upper tank to overflow. With the arrangement provided,however, it is easy for the operator to draw oiT part of the contents ofthe upper tank by opening the valve 72 and it should be noted thatsinceall the cement in the lower receptacle came originally from afilling of the upper receptacle there is no danger of carrying backenough cement to overflow the upper receptacle.

The lower receptacle 50 is also provided with cover members 7% and 76which are movablysecured with their side edges in close contact with thelateral faces of the lower r01 30 and which act as gibs or scrapers tokeep clean a portion of the lateral faces of said roll. It will beobserved, however, that there isa considerable inner section oithelateral faces which does not contact with these cover members; and thesesections are kept clean by small plates 78 and 80 (Fig.4) which aresupported in position by dowel pins and which bear against the end facesof the roll 36 close to the hubs thereon. Control of the quantity ofcement carried out by the periphery of the roll 30 is effected by anadjustable scraper 82, the position of which maybe determined by a handas. The scraper 82coacts with the cover plates 74. and '76 to form acomplete closure for the receptacle 50 adjacentto the upgoing side ofthe roll 30., At this point, there is a considerable accumulation. orcement which is removed from the periphery of the roll by the scraper 82during the continued rotation of the lower roll 30, and there is atendency for it to work up through the joints between said scraper 82and the cover members 74 and '76. This ac-' tion is prevented in themachine herein described by providing zigzag joints between the scraper82 and the cover portion 76 which, as illustrated in Fig. 4, comprise aseries of angularly disposed intersecting surfaces which provide severalcorners'around which the cement must travel before it can escape at thetop. Such an arrangement affords a maximum of protection against leakagewithout requiring machine work of such an accuracy as to make the costexcessive. willbe noted that it is found convenient to undercut theedges of the cover members 74 and 76 along the whole of their lengthas'shown in Fig. 5, this-being of no detriment at the downgoing side ofthe roll.

Toassist the operatorin so guiding the work that it willcontaet withonly 'a portion or" the width of the periphery of either one or bothrolls, the machine is provided with a work supporting plate 90 having anupturned, edge portion 92 or" substantial length which serves as an edgeguide for a piece of work 94, which may be, for example, the cuff, to beattached to a rubber gaiter or overshoe. Such a piece of work is laid onthe table with its edge in contact with the edge gage 92 and is passedbeneath the over hanging holddown finger 96, being thus guided along apath such that it will contact with only the desired portion of therolls Hand 30. The

work table and edgegage'aremounted upon a bracket 98 which has atongue-and-groove connection with a surface 100 machined on the side ofthe movable supporting arm 20, and this bracket is slotted so that itmay be secured in adjusted position by means of a bolt 102 and a thumbnut (not shown). 7

Upon the side of the receptacle 12, a lug 110 provides a pivotal supportfor an arm 112 carry-- ing a cleaning roll 114, which is held either ininoperative position out of the way of the work or may be swungdownwardly in the direction indicated in Fig. 2 to bring the roll 114into contact with the upper cement roll 14. This cleaning roll isprovided with adhesive material such as friction tape and removesportion of hardened cement from the less adhesive metallic surface ofthe applying roll 14.

In the use of the machine, cement is supplied to the upper tank 12 and aportion thereof drained through the spout 70 to fill the lowerreceptacle 50. The edge gage 92 is then adjusted in accordance with thewidth of the marginal stripe 116 to be applied to one or both surfacesof the piece of work 94. A corresponding adjustment is made of thescraper 40 to control the width of the band of cement applied by theupper roll 14 and the scraper 82 is adjusted to control the quantity ofcement taken out by the lower roll 30. Assuming, then, that the valve 38has been opened so that cement is being supplied to the upper roll, themachine is set in operation and the movably supporting arm 20 raised bythe treadle connection 24 to bring the opposite rolls l4 and 30 intocontact with the opposite faces of the piece of work 94 so as thereby tofeed the work and to apply a coating of cement to its opposite faces.When it is desired to apply cement to only one face, then the lowerreceptacle 50 is not filled but the lower roll 30 is used merely as awork supporting feed roll.

Although the machine has been described herein in its particularapplication to coating shoe parts with cementitious material, it will beunderstood that the invention is in many of its aspects equallyapplicable to coating other articles than shoe parts and to applyingother kinds of coating materials than cement. Accordingly, the scope ofthe invention is to be determined by the broadest construction of theterms of the claims which is permitted by the prior art.

Having thus described this invention what is claimed as new and desiredto secure by Letters Patent of the United States is:

1. In a cementing machine, a cement apply ing roll, overhead means forsupplying cement to said roll, and means to control the quantity ofcement delivered to the work by the periphery of the roll comprising abar scraper slidably mounted on said overhead means for adjustmentacross the periphery of the roll from side to side to clean cement fromone portion of said periphery.

2. In a cementing machine, a cement applying roll, means for supplyingcement to said roll comprising a casing partially surrounding the roll,and means to control the cement delivered to the'work by the peripheryof the roll comprising a scraper slidably mounted for movement throughsaid casing and adjustable across the periphery of the roll from side toside, constructed and arranged in one position to limit the width of theband of cement applied to the work by removing cement from a portion ofthe periphery of said roll.

3. In a cementing. machine, a cement applying roll, means for supplyingcement to said roll, and means to control the quantity of cement takenout by the periphery of the roll compris ing a scraper adjustable acrossthe periphery of the roll and arranged to clean cement from one portionof said periphery, said scraper having a recessed portion overlying theroll constructed and arranged to limit the quantity of cement carriedout by another portion of the periphery of the roll.

4. In a cementing machine, a cement applying roll, means for supplyingcement to the upper portion of said roll comprising a casing partiallysurrounding the roll and arranged to prevent leakage of cement along thesides of the roll, means to control the quantity of cement taken out ofthe casing by the periphery of the roll comprising a scraper slidablymounted in said casing for movement across the periphery of the roll andprovided with a cut-away portion to allow a limited quantity of cementto be taken out by a portion of said roll, and means for adjusting saidscraper along a path parallel to the axis of' said roll.

5. In a cementing machine, a cement applying roll, means for applyingcement to said roll, means to control the cement deliveredto the work bythe periphery of the roll comprising a slidably mounted scraper capableof adjustment across the periphery of the roll and provided with acut-away portion to allow a limited quantity of cement to be taken outby a portion of the width of the roll, and means for adjusting saidscraper along a path parallel to the axis of said roll. 7

6. In a double cementing machine having superposed cement applyingrolls, means for immersing the whole width of a portion of the peripheryof each roll, and a scraper immersed in cement contacting with only afractional portion of. the Width of the immersed portion of theperiphery of one of said rolls to remove cement from part of the widthof the periphery.

CAROLINE E. COSGROVE,

Administratrir of the Estate of John W. Cosgrove, Deceased.

